短語詞組短語information bearer channel 信息承載信道;信息載送信道bearer channel control protocol 承載信道控制協(xié)議BEARER CHANNEL CONTROL 承載通道控制協(xié)議Bearer Channel Connection BCC 承載通路連接bcc bearer channel connection 承載信道連接IBC Information Bearer Channel 信息承載信道I bearer channel 信息承載信道bearer channel distribution 承載通路分配B channel Bearer channel 承載信道 返回 bearer channel